MATEC Web Conf.
Volume 356, 20222022 2nd International Conference on Advanced Energy, Power and Electrical Engineering (AEPEE2022)
|Number of page(s)||5|
|Published online||14 March 2022|
Study on ammonium-promoted phenol-formaldehyde-based gel for enhanced oil recovery and its seepage characteristics in porous media
CNOOC Ener Tech-Drilling & Production Co., Tianjin, 300452, China;
2 Petroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan, 610500, China.
* Corresponding author: firstname.lastname@example.org
The phenol-formaldehyde crosslinker has low reactivity at low temperature, and is not easy to occur crosslinking reaction. In order to solve this problem, a kind of ammonium-promoted phenol-formaldehyde-based gel profile control agent was constructed which has the reactivity at low temperature. The basic formula is 0.30%~0.60%polymer, 0.01%resorcinol, 0.60% phenol-formaldehyde crosslinker and 0.10% ammonium salt. The results showed that the final gelling time was 6 days at 65°C, and the final gelling strength could reach G grade. In response to the problem that the plugging characteristics of ammonium-promoted phenol-formalde-hydebased gel are still unclear, the seepage characteristics of the phenol-formaldehyde-based gel in porous media are revealed by physical simulation of sand-pack. The research shows that the plugging rate of porous media with permeability of 2000 mD reaches 98%, the breakthrough pressure gradient is greater than 1.35 MPa/m.
Key words: Polymer Gel / Ammonium-promoted / Enhanced Oil Recovery / Porous Media
© The Authors, published by EDP Sciences, 2022
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